version 1.15, 2000/08/16 09:26:52
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version 1.19, 2002/01/05 17:42:30
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\ search order wordset 14may93py |
\ search order wordset 14may93py |
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\ Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc. |
\ Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc. |
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\ This file is part of Gforth. |
\ This file is part of Gforth. |
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\ You should have received a copy of the GNU General Public License |
\ You should have received a copy of the GNU General Public License |
\ along with this program; if not, write to the Free Software |
\ along with this program; if not, write to the Free Software |
\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA. |
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$10 constant maxvp |
$10 value maxvp \ current size of search order stack |
Variable vp |
$400 constant maxvp-limit \ upper limit for resizing search order stack |
0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
Variable static-vp |
0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
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0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, 0 A, |
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0 Value vp |
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static-vp ' vp >body A! |
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: get-current ( -- wid ) \ search |
: get-current ( -- wid ) \ search |
\G @i{wid} is the identifier of the current compilation word list. |
\G @i{wid} is the identifier of the current compilation word list. |
Line 71 Variable slowvoc 0 slowvoc !
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Line 74 Variable slowvoc 0 slowvoc !
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Create wordlist drop DOES> context ! ; |
Create wordlist drop DOES> context ! ; |
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: check-maxvp ( n -- ) |
: check-maxvp ( n -- ) |
maxvp > -49 and throw ; |
dup maxvp-limit > -49 and throw |
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dup maxvp > IF |
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vp static-vp = -49 and throw |
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BEGIN dup maxvp 2* dup TO maxvp > 0= UNTIL |
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vp maxvp 1+ cells resize throw TO vp |
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THEN drop ; |
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: init-vp ( n -- ) |
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$10 TO maxvp |
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maxvp 1+ cells allocate throw TO vp |
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static-vp dup @ 1+ cells vp swap move ; |
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:noname |
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DEFERS 'cold |
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init-vp ; |
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IS 'cold |
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: push-order ( wid -- ) \ gforth |
: >order ( wid -- ) \ gforth to-order |
\g Push @var{wid} on the search order. |
\g Push @var{wid} on the search order. |
vp @ 1+ dup check-maxvp vp! context ! ; |
vp @ 1+ dup check-maxvp vp! context ! ; |
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Line 81 Variable slowvoc 0 slowvoc !
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Line 99 Variable slowvoc 0 slowvoc !
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\G Like @code{DUP} for the search order. Usually used before a |
\G Like @code{DUP} for the search order. Usually used before a |
\G vocabulary (e.g., @code{also Forth}); the combined effect is to push |
\G vocabulary (e.g., @code{also Forth}); the combined effect is to push |
\G the wordlist represented by the vocabulary on the search order. |
\G the wordlist represented by the vocabulary on the search order. |
context @ push-order ; |
context @ >order ; |
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: previous ( -- ) \ search-ext |
: previous ( -- ) \ search-ext |
\G Drop the wordlist at the top of the search order. |
\G Drop the wordlist at the top of the search order. |